Serial to Ethernet module - USRIOT V3.2.5.pdfSerial to Ethernet module USR-TCP232-T24 series is data...

Serial to Ethernet module user manual http://en.usr.cn

Jinan USR IOT Technology Limited Page1 of 63 [email protected]

Serial to Ethernet module

(USR-TCP232-T, USR-TCP232-2)

(USR-TCP232-S, USR-TCP232-D)

(USR-TCP232-24, USR-TCP232-200)

(USR-TCP232-300, USR-TCP232-204)

File version: V3.2.5

Serial to Ethernet module USR-TCP232-T24 series is data transparent transmission equipment for

convert TCP or UDP socket data to RS232 or RS485 or RS422, small size, low power, powered by ARM

processors, high speed , high Stability.

Key words: TCP/IP, TCP, UDP, RS232, RS485, RS422, Ethernet, Module, Single chip card module,

Serial server, Serial to Ethernet

There is discount for bulk purchase. And customized service is available, MQQ is 300 pics.

Jinan USR IOT Technology Limited provide you Ethernet, WIFI, GPRS Solutions and so on, hardware,

software, and server. Just let me know your needs, we are going to satisfy.

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Content

Serial to Ethernet module ............................................................................................................................................... 1

1．Product introduction ............................................................................................................................................. 5

1.1 Brief Intro .................................................................................................................................................... 5

1.2 Function Features ..................................................................................................................................... 5

1.3 Product Characteristics ............................................................................................................................ 5

1.4 Applications Area ...................................................................................................................................... 6

1.5 Product Model ........................................................................................................................................... 6

2. Product Test ............................................................................................................................................................ 7

2.1 Hardware Connection .............................................................................................................................. 7

2.2 Set-up Software ........................................................................................................................................ 8

2.3 Communication Test ................................................................................................................................. 9

2.4 The Default Mode Test ............................................................................................................................. 9

2.5 Virtual COM Test ..................................................................................................................................... 12

3. Hardware Description .......................................................................................................................................... 14

3.1 USR-TCP232-S ....................................................................................................................................... 14

3.1.1 Technical Specifications ...................................................................................................... 14

3.1.2 Hardware Description ......................................................................................................... 15

3.1.2.1 Pin Description .................................................................................................................. 15

3.1.22 Mechanical Dimensions.................................................................................................... 16

3.1.23 Connection Diagram ......................................................................................................... 16

3.2 USR-TCP232-T ....................................................................................................................................... 19

3.2.1 Technical Specifications .................................................................................................................. 19

3.2.2 Hardware Description ..................................................................................................................... 20

3.2.21 Pin description ................................................................................................................... 20

3.2.22 LED Status .......................................................................................................................... 21



3.3 USR-TCP232-W...................................................................................................................................... 22



3.3.21 Pin description ................................................................................................................... 25

3.3.22 LED Status .......................................................................................................................... 27



3.4 USR-TCP232-D ...................................................................................................................................... 28



3.4.21 Pin Description ................................................................................................................... 29

3.4.22 LED Status .......................................................................................................................... 29


3.5 USR-TCP232-2 ....................................................................................................................................... 31





3.5.21 Pin Description ................................................................................................................... 32

3.5.22 Interface Description ......................................................................................................... 32

3.5.23 Jumper Usage Mechanical Dimensions ........................................................................ 33

3.6 USR-TCP232-200 ................................................................................................................................... 34

3.7 USR-TCP232-24 ..................................................................................................................................... 34



3.7.21 LED Status .......................................................................................................................... 35



3.8 USR-TCP232-300 ................................................................................................................................... 38

3.9 USR-TCP232-301 ................................................................................................................................... 39



3.9.21 LED Status .......................................................................................................................... 40



3.10 USR-TCP232-204 ................................................................................................................................ 42

3.10.1 Technical Specifications ................................................................................................................ 42

3.10.2 Hardware Description ................................................................................................................... 42

3.10.21 LED Status ....................................................................................................................... 42

3.10.22 Interface Description ....................................................................................................... 43

3.10.23 Terminal Functional Specifications ............................................................................... 43

3.10.24 Jumper Usage Mechanical Dimensions ...................................................................... 44

4. Work Mode ........................................................................................................................................................... 44

4.1 Block Diagram ......................................................................................................................................... 44

4.2 TCP Client Mode ..................................................................................................................................... 45

4.3 UDP Mode ................................................................................................................................................ 45

4.4 UDP Server Mode ................................................................................................................................... 45

4.5 TCP Server Mode ................................................................................................................................... 46

4.6 Special Functions .................................................................................................................................... 47

4.61 RS485 ............................................................................................................................................... 47

4.62 Link .................................................................................................................................................. 48

4.63 Reset ................................................................................................................................................. 48

4.64 ID ..................................................................................................................................................... 48

4.65 Index ................................................................................................................................................. 51

4.66 RFC2217 .......................................................................................................................................... 52

5. Application ........................................................................................................................................................... 53

5.1 COM TCP/UDP server ........................................................................................................................... 53

5.2 Virtual COM ............................................................................................................................................. 54

5.3 COM TCP/UDP COM ....................................................................................................................... 54

5.4 Many UDP server .................................................................................................................................... 55

5.5TCP/UDP proxy server ............................................................................................................................ 55



5.6 TCP/UDP server ................................................................................................................................... 56

6. Configuration ....................................................................................................................................................... 58

6.1 Configure Command Format................................................................................................................. 58

6.11 Serial Settings Command ................................................................................................................. 58

6.12 Network Settings Command ............................................................................................................ 59

6.2 USR-TCP232-SETUP ............................................................................................................................ 60

6.21 Setup via COM ................................................................................................................................. 60

6.22 Setup via Net .................................................................................................................................... 60

6.23 Special Function Configuration ....................................................................................................... 61

7. Contact us ............................................................................................................................................................. 62



1．Product introduction

1.1 Brief Intro

USR-TCP232-T24 series is used to TCP network packet or UDP packet with the micro-controller/

RS232/RS485/RS422 interface data transparent transmission equipment. The product is equipped with ARM

processors, high speed, high stability. Module class of compact size, low power consumption; server refined

aluminum metal shell, compression, anti-drop, anti-interference performance.

USR-TCP232-T24 series is more functional embedded Ethernet serial port data conversion products, it

has built-in TCP/IP protocol stack, the user can use it easily to complete embedded devices network function,

save manpower material resources and development time, make our products faster to market, enhance

competitiveness.

There is 10/100M auto detected RJ45 interface, serial communication baud rate up to 230.4Kbps, can

work at TCP Server, TCP Client, UDP and UDP server mode, setup easily via software.

1.2 Function Features

10/100M auto detect interface;

support AUTO MDI/MDIX(Except for TCP232-W, -301), Can use a crossover cable or parallel cable

connection;

RS232 bound rate can set up from 300 to 256000;

RS485 bound rate can set up from 300 to 115200;

Work mode TCP Server, TCP Client, UDP, UDP Server;

Working model related parameters can be set via a serial port or network;

3.3 V TTL level (module products);

Virtual serial port supported;

Unique heartbeat package mechanism to ensure that the connection is reliable, put an end to connect

feign death;

Under UDP mode, Packet Broadcast is prohibited, with stronger anti-interference ability;

across the gateway, across switches, routers;

Can work in LAN, also can work on the Internet (external network);

Transmission distance: RS232 - 15 meters, RS485 - 1000 meters, cable 200 meters (after the switches

together through the Internet, no distance limit).

1.3 Product Characteristics

32 bits ARM CPU inside;

LAN : 10/100Mbps; protect: Built-2KV isolated electromagnetic;

serial port baud rate: from 2400 to 256 KBPS can be set up, and up to 3 MBPS;

network protocol: ETHERNET ARP IP UDP TCP ICMP;

Software tool: configuration software, TCP/UDP test soft, RS232 debug soft;

Configuration method: RS232 or via Ethernet, free software available;



Operating temperature: -25~75°C;

Storage environment: -40~85°C, 5~95%RH.

1.4 Applications Area

Serial device server module for connecting serial industrial automation equipment such as PLC, sensors,

meters, motors, drives, bar code readers and displays and design.

Serial server module is widely used in attendance, access control systems, Canteen machines, POS

systems, building control, fire control, the banking system, engine room monitoring, UPS monitoring, power,

oil, environmental monitoring, industrial applications and other areas.

T24 Series products are suitable for internal LAN users in a simple to use, for complex network

environments such as the Internet, a camera, a large group networks, fiber to Ethernet, etc., it is

recommended to use E45 series.

1.5 Product Model

Model number Power supply

DC Interface

Network port

10/100Mbps

Package Type

(Module products)

USR-TCP232-S 3.3V TTL PHY chip network

interface

Stamp Hole

Package

USR-TCP232-T 3.3V TTL Take 2kv magnetic

isolation RJ45

Pin package (DIP

package)

USR-TCP232-D 3.3V TTL

With 1.5KV PHY signal

of electromagnetic

separation

Pin package

(DIP package)

USR-TCP232-2 5V power

adapter/terminal RS232

Take 2 kv magnetic

isolation RJ45



Take 2 kv magnetic

isolation RJ45


adapter/terminal

RS232/

RS485

Take 2 kv magnetic

isolation RJ45


adapter/terminal

RS232/

RS485

Take 2 kv magnetic

isolation RJ45



Take 2 kv magnetic

isolation RJ45

Model Description: USR stands for Jinan USR IOT Technology Limited as well as our brand. TCP232 is

TCPIP to serial module product, 2/4/T means serial-side level in the form.



2. Product Test

Pls connect the product with your computer or router to test its performance.

2.1 Hardware Connection

USR-TCP232-S, USR-TCP232-T, USR-TCP232-D are named as the module, USR-TCP232-2,

USR-TCP232-200, USR-TCP232-24, USR-TCP232-300, USR-TCP232-204, the serial server in the

following:

1. Power Supply:

The module’s VDD is DC5V, and its VCC is DC3V3. Only choose one to ensure supply current more than

200mA. The serial server needs matching adapter for power.

2. Serial Connection:

The module’ serial level is TTL. It needs converter TTL to RS232 if connected to RS232 serial of

computer. ( The module can direct to computer with our evaluation kit.)

The serial server can connect to computer directly.( RS485 level needs to convent to RS232).

3. Network Connection:

Connect to computer or join your router via cable. The product can realize automatic switch between

connected directly cable and crossover.

USR-TCP232-T connected to computer as below:



2.2 Set-up Software

Set-up Software in the CD as can help to view default setting then set the

parameter.

1. Setup via net ( Firstly, ensure the computer IP is static. The module IP is 192.168.0.201by default;

Disable firewall, antivirus program and WIFI).

Set via COM ( Connect CFG pin).



2.3 Communication Test

in CD can help you test.

Serial to net debugging tester application:

1. Ensure the COM port baud rate, check bits, data bits, stop bit correspond to module parameters.

2. Ensure network protocol, IP address, port number correspond to module parameters.

3. Open COM and the web then connect. They begin transparent transmission after choose the module

IP.

2.4 The Default Mode Test

The default mode is TCP Client, and the default parameter is as below:

IP address: 192.168.0.7

Checksum: 255.255.255.0

Gateway: 192.168.0.201

Baud rate: 115200

Destination IP: 192.168.0.201

Destination port: 8234

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1. Material: pc with rs232( or use USB to rs232 cable), 3.3V or 5V power, rs232 cable, Network Cable,

COM debug software, TCPIP debug software(in CD, also can be download).

2. Connection: Connect module rs232 to pc rs232, RJ45 to pc RJ45 or the same router (same subnet).

Power on the module.

Note: TXD to RXD, RXD to TXD.

3. Setup PC IP to 192.168.0.201.

4. Open the in CD, TCP server, listen port 8234



5. Set the baud rate 115200 and right port, then open COM port.



6. The module can connect the port automatically regarding to TCP Client mode. Quickly, you see that ,

then Choose the peers, type info and click send. The info will be sent to the module then output from the

COM.

7. You can send data between two softwares.

Serial to PC: PC Serial->Module Serial->Module Network->PC Network

Network to Serial: PC Network->Module Network->Module Serial->PC Serial

2.5 Virtual COM Test

Virtual COM means to convent data TCP connected to data of a COM within PC for transparent

transmission. Take TCP Client mode for example:

1. Connect module to PC serial and set PC IP to be 192.168.0.201.

2. Install and run 问题

Add virtual COM, you need to notice COM port, bond rate and work mode of PC, then click Activate.



5. After Activate click, COM2, will be created, it receives data from TCPIP socket. And data sent to COM2

is transmitted to TCP232 converter then output through RS232.

The success picture as follow:

At this point, you can use your equipment as an ordinary serial port, and operate of local virtual serial

port will converted to operation of the remote module RS232. The figure is show send data between the two

serial port.



3. Hardware Description

3.1 USR-TCP232-S

USR-TCP232-S Model Stamp Hole Package TTL serial port level, the PHY signal, the small size of the

TCPIP serial protocol module.

3.1.1 Technical Specifications

Major characteristic Parameter

Package Type Stamp hole encapsulation (SMD encapsulation)

Schematic diagram

and PCB library See the CD library file

Power Supply

VCC: 3.3 V DC typical values, minimum 3.15, the biggest 3.45 V,

suitable for 3.3 V microcontroller system(If it is 5 v, reference Fig

1-1 3.3V-5V Matching circuit)

Serial port level TTL level

Network interface PHY signal

Physical Size: PCB size: 33*20mm（L*W）

Temperature and

humidity range

Operating temperature: -25 to 75 ° C

Storage temperature: -40 to 80 ° C

Storage humidity: 5% to 95% RH

app:ds:major

app:ds:characteristic

app:ds:parameter



Fig 1-1 3.3V-5V Matching circuit

3.1.2 Hardware Description

3.1.2.1 Pin Description

No. Pin Function Descriptions

1 GND Signal ground GND

2 RST RESET

Pin received 200ms low to reset the whole module.

If you do not use, can be suspended.

Note: The module is powered automatic reset, it is

recommended that connect the MCU IO port, reset the MCU

control module in a particular case.

3 ISP Update pin

This pin to ground to the module power module can be

upgraded.

If you do not use, can be suspended.

4 RXD Module data is

received

Data receiving end of the module, TTL level 3.3V

microcontroller(If it is 5 v, reference Fig 1-1 3.3V-5V

Matching circuit)

5 TXD Module data

transmission

Data transmission end of the module, TTL level can be

connected to 3.3V microcontroller(If it is 5 v, reference Fig

1-1 3.3V-5V Matching circuit)

6 CFG

Serial ports

Configuration pins

Low, you can use the serial port module configuration.

Normal working hours left floating or tied HIGH.

Note: give the power module, and then pulled down the CFG

pin to enter the serial configuration state.

7 LED2 Network data

instructions

Network data indicator LED connected to VCC, without the

current limiting resistance (module existing)

8 LED1 Network connection Network connection status indicator LED connected to VCC,



status indicator without the current limiting resistor (module already)

9 2V5 PHY chip

Output voltage

PHY chip to control the voltage output, access networks

transformer center tap

10 RX+ Received signal + Receive Data+

11 RX- Received signal - Receive Data-

12 TX+ Transceiver Data+ Transceiver Data+

13 TX- Transceiver Data- Transceiver Data-

14 RTS the alternate pin Can be used as RS485 enable pin

15 CTS the alternate pin Can be used as a network connection status indicator pin

16 VCC Power supply Power supply: 3.3V @ 200mA

3.1.22 Mechanical Dimensions

Unit: mm

3.1.23 Connection Diagram



USR-TCP232-S+RJ45 of built-in network transformer:

USR-TCP232-S+RJ45 of built-in network transformer:



3.2 USR-TCP232-T

USR-TCP232-T Model pin package, TTL serial port

level, of 2KV electromagnetic isolation RJ45 interface, small

size TCPIP serial protocol module.



Package Type Pin type package (DIP package)

Schematic diagram and

PCB library See the CD library file

Power Supply

The module adopts double power supply interfaces, either is ok.


suitable for 3.3 V microcontroller system

VDD: 5 V DC typical values, minimum 4.5, the biggest 5.5 V(If it

is 5 v, reference Fig 1-1 3.3V-5V Matching circuit)

Working current 150 mA, the maximum 200 mA



Physical Size: PCB size: 50.5*22.6mm（L*W）

Module size: 55*23*23mm（L*W*H）

Temperature and

humidity range




app:ds:major


app:ds:parameter




3.2.21 Pin description

Pin Name Description

VDD Power 1 4.5~5.5V

VCC Power 2 3.3V

GND GND Power and Communications Ground

RST Reset pin 200ms GND reset the module

TXD UART transmission pin TTL-3.3V(If it is 5 v, reference Fig 1-1 3.3V-5V

Matching circuit)

RXD UART receive pin TTL-3.3V(If it is 5 v, reference Fig 1-1 3.3V-5V

Matching circuit)

CFG Configure pin Configure mode when this pin GND, normal

mode when VCC or idle

Module in the upper left four spare pins from

right to left:


1: EN EN alternate pin RS485 enable pin

2: LINK LINK alternate pin Network connectivity status indicator pin

3: ISP Update pin This pin to ground to the module power

module can be upgraded.



3.2.22 LED Status

There are two leds in RJ45 connector, one is green, and the other is yellow.

LED Name Description

Green Link state Light when 100Mbps network linked

Yellow Data transfer Blink when there is data in or out


Unit: mm


USR-TCP232-TRS232 to Ethernet

1

2

3

6MCU51,AVR,PIC,ARM

VCC VCC

GND

RXD

TXD

GND

TXD

RXD

Tx+

Tx-

Rx+

Rx-



3.3 USR-TCP232-W

USR-TCP232-T Model pin package, TTL serial port level, of 2KV electromagnetic isolation RJ45

interface, small size TCPIP serial protocol module.

Size of -W is fully compatible to -T, except one place(add one more pin), shown below








Power Supply




VDD: 5 V DC typical values, minimum 4.5, the biggest 5.5 V, (If it


Working current Around 140 mA when working fullspeed, the maximum 200 mA



Physical Size: PCB size: 50.5*22.6mm（L*W）

Module size: 55*23*23mm（L*W*H）

Temperature and

humidity range



app:ds:major


app:ds:parameter




3.3.21 Pin description


VDD Power 1 4.5~5.5V

VCC Power 2 3.3V

GND GND Power and Communications Ground

RST Reset pin 200ms GND reset the module

TXD UART transmission pin TTL-3.3V(If it is 5 v, reference Fig 1-1 3.3V-5V

Matching circuit)

RXD UART receive pin TTL-3.3V(If it is 5 v, reference Fig 1-1 3.3V-5V

Matching circuit)

CFG Configure pin Configure mode when this pin GND, normal

mode when VCC or idle




1: EN EN alternate pin RS485 enable pin

2: LINK LINK alternate pin Network connectivity status indicator pin

3: ISP Update pin This pin to ground to the module power

module can be upgraded.



3.3.22 LED Status

There are two leds in RJ45 connector, one is green, and the other is yellow.





Unit: mm


USR-TCP232-TRS232 to Ethernet

1

2

3

6MCU51,AVR,PIC,ARM

VCC VCC

GND

RXD

TXD

GND

TXD

RXD

Tx+

Tx-

Rx+

Rx-



3.4 USR-TCP232-D

USR-TCP232-D models to pin package, TTL serial port level,

1.5KV electromagnetic isolation PHY signal, small size, TCPIP

compatible weeks meritorious product serial protocol module.






Power Supply




VDD: 5 V DC typical values, minimum 4.5, the biggest 5.5 V, (If it



Network interface PHY signal with 1.5KV Ethernet signal

Characteristic Pin compatible ZLG products

Physical Size: PCB size: 44*32mm（L*W）

Module size: 44*32*15.4mm（L*W*H）

Temperature and

humidity range




app:ds:major


app:ds:parameter




3.4.21 Pin Description

Pin Name Description Pin Name Description

1 TX+ Transceiver Data+ A breach here

2 TX- Transceiver Data- 23 NC

3 RX+ To RJ45 Pin3 22 NC

4 RX- To RJ45 Pin6 21 NC

5 Data_LED Link to yellow Led and

through a resistance to

VCC

20 NC

6 TXD Transmit data 19 NC

7 RXD Receive data 18 ISP For Update

8 RTS RS485 enable pin 17 NC

9 CFG Config enable port for

RS232 Config

16 3.3V DC3.3V input and5V use

1 is ok.

10 RST Reset pin, 200ms low

for reset

15 LINK Link to green Led and

Through a resistance to

VCC

11 GND To GND 14 5V DC5V input@200mA

12 GND To GND 13 5V DC5V input@200mA

3.4.22 LED Status

USR-TCP232-D Red LED, If the indicator is energized, the module power input is correct.




Unit: mm


Note: Isolation transformer has been on this module, so you need not to add Isolation transformer in

your RJ45 port.



3.5 USR-TCP232-2

USR-TCP232-2 Model is RS232 level, 2KV electromagnetic isolation RJ45 connector, 5.5 * 2.1 standard

power supply or terminal power supply serial server.



Power Supply DC5V@1A power adapter

Serial port level RS232

Network interface RJ45 ports with 2KV electromagnetic isolation

Physical Size: PCB size: 67.3*34mm(L*W)

Product size: 86.6×34×25mm（L*W*H）

Temperature and

humidity range




app:ds:major


app:ds:parameter




3.5.21 Pin Description

There are two leds in RJ45 connector, one is green, and the other is yellow. And 1 power led.


Red Power Light When Power on



3.5.22 Interface Description

Power Interface

DC5V power supply, you can make 5.5 * 2.1 standard power supply or 3.81mm pitch terminal blocks, the

default state is 5.5 * 2.1 standard power supply, power input with TVS protection products.

RS232 Interface

RS232 use 9 pin female (hole), only 3 pins in use, others are NC, the detail is below.

RXD

TXD

GND

5 4 3 2 1

9 8 7 6

ID Mark Function Description

2 TXD Send Device Data RS232 Level

3 RXD Receive Device Data RS232 Level

5 GND Ground Communication total site

9 VCC Device is powered via this pin The PCB pads jumper need it

with the power input a positive

connection for the serial

sensor supply via the serial

line or external power to the

device is not turned on by

default.



RJ45 Internet Interface

Auto detected 10M/100M RJ45 interface, support AUTO MDI/MDIX, that is to say you can use crossover

cable or a straight cable to connect it to PC for test.


1 TX+ Transceiver Data+

2 TX- Transceiver Data-

3 RX+ Receive Data+

4 n/c Not connected

5 n/c Not connected

6 RX- Receive Data-

7 n/c Not connected

8 n/c Not connected

3.5.23 Jumper Usage Mechanical Dimensions

Mini Jumper Marks:

Short CFG and GND is CFG, effective, using serial for configuration.

Short UPD and GND is UPD, effective, coming to upgrade.

Mini Jumper links to GND by default, not effective.

Link,EN function, pls refer to 4.6 Special functions Description.



3.6 USR-TCP232-200

USR-TCP232-200 Model RS232 level, the 2KV electromagnetic isolation RJ45 interface, 5.5 * 2.1

standard power supply or terminal power supply serial server.

Appearance and size shown as follows:

3.7 USR-TCP232-24

USR - TCP232-24 models for RS232 or RS485 level, 2 kv RJ45 interface of electromagnetic isolation,

5.5 * 2.1 standard power supply serial server.







RS485


Physical Size: PCB size: 80*50mm(L*W)


Temperature and

humidity range





3.7.21 LED Status



Green Power Light When Power on



app:ds:major


app:ds:parameter




Power interface

DC5V power supply, you can make 5.5 * 2.1 standard power supply, power input with TVS protection

products.

RS232 interface


RXD

TXD

GND

5 4 3 2 1

9 8 7 6











default.

RS485 interface

RS485 has two lines A(data+) and B(data-), 120 Ohms Termination Resistance on board.

Note:

RS232 and RS485 can not work together, since it is 1 channel.

this module can autoselect for RS232 or RS485, doesn't need choose via jumper(from hardware version

V3.0)

RJ45 internet interface

Auto detected 10M/100M RJ45 interface, support AUTO MDI/MDIX, that is to say you can use crossover

cable or a straight cable to connect it to PC for test.






3 RX+ Receive Data+

4 n/c Not connected

5 n/c Not connected

6 RX- Receive Data-

7 n/c Not connected

8 n/c Not connected


Mini Jumper Marks:






3.8 USR-TCP232-300

USR-TCP232-300 model products for RS232 or RS485 level, 2 kv RJ45 interface of electromagnetic

isolation, 5.5 * 2.1 standard power supply with a shell of a serial port server.

Appearance and size shown as follows:

USR-TCP232-300 by USR-TCP232-24 shell, its specification please see USR-TCP232-24.



3.9 USR-TCP232-301

USR - TCP232-24 models for RS232 or RS485 level, 2 kv RJ45 interface of electromagnetic isolation,

5.5 * 2.1 standard power supply serial server.

The one with case, named as TCP232-301, footprint is fully compatible with TCP232-300

The one withour case, named as TCP232-301M, footprint is fully compatible with TCP232-24





RS485




Temperature and

humidity range




app:ds:major


app:ds:parameter




3.9.21 LED Status



Green Power Light When Power on




Power interface

DC5V power supply, you can make 5.5 * 2.1 standard power supply, power input with TVS protection

products.

RS232 interface


RXD

TXD

GND

5 4 3 2 1

9 8 7 6











default.



RS485 interface

RS485 has two lines A(data+) and B(data-), 120 Ohms Termination Resistance on board.

Note: this module user Jumpers to change work for RS232 or RS485, by default it work at RS232 mode.

RJ45 internet interface

Auto detected 10M/100M RJ45 interface, doesn't support AUTO MDI/MDIX.




3 RX+ Receive Data+

4 n/c Not connected

5 n/c Not connected

6 RX- Receive Data-

7 n/c Not connected

8 n/c Not connected


Mini Jumper Marks:






3.10 USR-TCP232-204

USR-TCP232-204 model products for RS485, 2 kv RJ45 interface of electromagnetic isolation, 5.5 * 2.1

standard power supply or power supply terminal of a serial port server with shell.



Power Supply DC5-18Vpower adapter




Product size: 95*85*25mm（L*W*H）

Temperature and

humidity range





3.10.21 LED Status




app:ds:major


app:ds:parameter





Power interface

DC5V power supply, you can make 5.5 * 2.1 standard power supply and 3.81mm pitch terminal blocks,

power input with TVS protection products.

RS485 interface

RS485 has two lines A(data+) and B(data-),the signal terminal 0.5A PTC Resettable Fuse, to prevent

accidental high current burn out the motherboard; Professional TVS lightning protection circuit design;

Internal 120R terminal matching resistor (the default is not used, the available short cap configured to use);

Can allow up to 32 transceiver node connected to the bus.

RJ45 internet

Auto detected 10M/100M RJ45 interface, support AUTO MDI/MDIX.

3.10.23 Terminal Functional Specifications


1 GND GND

2 B(-) B(data-)

3 A(+) A(data+)




Mini Jumper Marks:

1. Short UPD and GND is UPD, effective, coming to upgrade.


2. RS485 terminal resistance is not included by default, short Mini Jumper with according pin.

4. Work Mode

4.1 Block Diagram

Serial to Ethernet

Converter

Ethernet

power

User device

TTL

Take USR-TCP232-T for example, show demo application of module USR-TCP232-T



4.2 TCP Client Mode

In TCP client mode, after power on module according to their own Settings active TCP server to connect

to the server, and then establish a long connection, data transparent transmission after this mode, the TCP

server IP module would need to be visible and the visible means directly by module's IP can PING the server

IP, server side can be fixed IP, the Internet can also be internal network IP and module in the same local area

network.

MCU51,AVR,PIC,ARM COM Ethernet

1. Module try to connect to server

2. Data transfer through the connection

1.Server listen a TCP port

Module work at TCP Client mode

4.3 UDP Mode

In UDP mode, after the module is powered on listening on port Settings, not take the initiative to establish

a connection, when data from by forwarding to the serial port, when a serial port receives the data sent over

the network to the IP and port module Settings.

RS232 Ethernet

1.PC listen a UDP port

2. Data transfer With out connection, only data packet

1. Module listen a UDP port

Module work at UDP mode

RS232RS485System

4.4 UDP Server Mode

UDP server refers to the normal UDP are not validated on the basis of the source IP address, destination



IP instead of the UDP packets are received data source IP, similar to TCP server functionality.

In this mode, the module by default record a destination IP, when a serial port data, to record the IP to

send data, at the same time, the module at the server status, to accept the network packets sent to module,

and adjust the target IP IP for the data source, suitable for multiple IP working mode for the module.

Use computer end program and UDP mode is exactly the same, no need to change.

PC-A

RS232 Ethernet

Module work at UDP Server mode

PC-B

PC-B Send a data to module

Module change the

target IP to pc

Data transfer from Module to PC-B

12 3

1.PC listen a UDP port

2. Data transfer from Module to PC-A

1. Module listen a UDP port

RS232RS485System

Note:UDP mode, UDP server mode with a single maximum length of 1472 bytes should be controlled at or

below, if greater than this length, the module will automatically restart, the proposed subcontractor sent.

4.5 TCP Server Mode



In TCP Server mode, module and gateway trying to communication first, and then monitor set up local

port, there is connection request response and create a connection, can exist at the same time up to 4 links, a

serial port after receipt of the data will be sent to all at the same time of establishing links with network module

device.

USR-TCP232-SETUP software, set the Index function can be achieved when to establish a

multi-channel connection, the module can identify communications equipment, and with the specified device

to communicate.

4.6 Special Functions

4.61 RS485

USR-TCP232-S, USR-TCP232-T, USR-TCP232-D products "RTS" Alternate Pin USR-TCP232-200

product "EN" alternate pin for RS485, external enable control pin.



Set the software interface:

4.62 Link

The Link pins for the module to establish a communication connection status indicates pin, establish the

communication Link pin will output low level, no connection is established, output high level.

USR-TCP232-S "CTS" Alternate Pin USR-TCP232-T products, USR-TCP232-200 product "Link"

alternate pin, external Link instructions.


4.63 Reset

When the module as a TCP Client-side, the module will take the initiative to connect TCP SERVER.

When the Reset function, the module tries to connect to TCP Server-side 30 times, still unable to establish a

connection, the module will automatically restart.


4.64 ID

Module as TCP Client-side ID function for TCP Server-side distinguish between data sources, to achieve

the establishment of the connection or data communication process device ID will also be sent, the module ID

number is set to decimal, range 0 - 65535, requires the receiving end HEX format.

1.Select "Connect" to establish a communication connection, TCP Server-side will receive the

corresponding TCP Client-side ID (ID Description: The first four shows for the ID number, the last four digits

of the display ID negated to authentication).

The following picture shows the module do TCP CLINENT establish a communication connection ID

feature is enabled, the setup interface module ID number 12::



The figure below shows establish a communication connection ID function, the device through the serial

communication interface to the TCP Server-side:

2.Select data during each data transfer, TCP Server-side will receive the corresponding TCP Client-side

ID (ID Description: ID before data transmitted only display four-digit ID number).

The following picture shows the module do the TCP CLINENT ID feature is enabled, data transmission

module ID number 12 setting interface:



The figure below shows the data communication ID function, the device through the serial port to TCP

Server communication interface:



4.65 Index

Module as TCP SERVER end up at the same time to establish four connections, server-side at the same

time send data to four CLIENT and SERVER the receiving Client-side data can not distinguish between

sources of data, the Index function can send and receive data source selection.

Index function is enabled, communication data is displayed corresponding Client side device number,

specific parameters are described below:

1.When receive data from Ethernet, module will send data to serial port with head 49 N ,followed by data.

49 represent incoming data, N represent client index.

2.When user MCU want send data to module serial port, start with head 4F N data... 4F represent send

out, N represent which client.

3.When new TCP connection incoming, module will send 43 N M to serial port, indicating that there is

current link N accessed, total link number M.

4.When link number have exceed maximum, new link requirement will lead to message 46 46.

5.When disconnect, module will send 44 N M, represent current link N is delete, left link M.

Note: The above values set are HEX format.


Data transmission as shown below:



4.66 RFC2217

RFC2217 is an agreement for setup com port settings via Ethernet by socket, Our product support an

agreement like that, but not standard RFC2217, it is more sample and easy than RFC2217.

1.When module receive setup command, if is a valid command(right packet head and right checksum),

the module will change self setting and answer nothing, else the data bits would be sent out at com port.

2.TCP Client, TCP Server, UDP Client, UDP Server, UDP broadcast support this function.

3.All changes will work at once, but not save to module, when power off will lose the settings.


The command length is 8 bits, detail as follow table. The demo bytes are in hex mode:

Name Packet

header Band rate UART bits setting Check sum

Bytes 3 3 1 1

Description Three bytes Band rate in hex

mode, High byte first.

Parity/data/stop

settings, see follow

table.

Check sum of

last 4 bytes

For example

(115200,N,8,1) 55 AA 55 01 C2 00 83 83

For example

(9600,N,8,1) 55 AA 55 00 25 80 83 83

Appendix: UART bits setting detail.

Bit Description Value Description

1:0 Data bits 00 5 bits

01 6 bits

10 7 bits

11 8 bits

2 Stop bits 0 1 bits

1 2 bits

3 Parity enable 0 Not enable Parity

1 Enable Parity

5:4 Parity type 00 ODD

01 EVEN

10 Mark

11 Clear

8:6 Not used 000 Please fill 0



Test bits

55AA5501C2008346 For 115200 N,8,1

55AA550025808328 For 9600 N,8,1

Those two data is not transferred to serial, but the packet not conform will be transferred and revealed.

Open this function then open RFC2217 via USR-VCOM so serial port baud rate of PC application

software serial server device can be matched automatically.

5. Application

5.1 COM TCP/UDP server

MCU51,AVR,PIC,ARM RS232

COM to Ethernet

Socket software on PC or hand system

Ethernet

MCU use as RS232

Ethernet



5.2 Virtual COM

Install USR-VCOM and make settings.


Virtual COM mode

VSPM run on PCMCU use as RS232

Ethernet

计算端通用RS232操作


Old RS232 communication system

5.3 COM TCP/UDP COM


MCU use as RS232


Old Communication

MCU51,AVR,PIC,ARM

EthernetMCU

51,AVR,PIC,ARMRS232

MCU use as RS232

Update to RS232 remote Communication



5.4 Many UDP server

……

MCU

MCU MCU MCU

Module in Client

Module in Server

5.5TCP/UDP proxy server

You can use a proxy server to treat the data form one module to other, or just use you MCU to control the

module IP and destination IP Real-time. The method is pull CFG PIN to GND, and send the new configuration

data, then pull CFG pin to VCC to use new settings.



MCU

MCU

MCU

MCU

MCU

MCU

5.6 TCP/UDP server

MCU MCU MCU MCU MCU MCU

EthernetEthernet

Ethernet

Server

Routing / Switch



6. Configuration

Module's working mode can be set as needed, we try my best to let the user work become simple, all did

not open advanced parameters, if you have special requirements, please contact us.

You can set the work mode, the module IP and port, subnet mask, gateway, serial port baud rate, module

port, destination IP and port,can be set through the serial port or network port are two ways to setup software

(USR-TCP232-Setup).

6.1 Configure Command Format

6.11 Serial Settings Command

Configure mode UART interface: 9600bps,n,8,1

Part Bytes Description Example Hex

prefix 2 0x55 0xAA 0x55 0xAA 0x55 0xAA

destination IP 4 destination IP 192.168.0.2

01

0xC9 0x00 0xA8 0xC0

destination

port 2

Destination port 8234 0x2A 0x20

Host IP 4 The IP module hold 192.168.0.7 0x07 0x00 0xA8 0xC0

Host port 2 TCP/UDP source port 20108 0x8C 0x4E

Gateway 4 Gateway IP 192.168.0.2

01

0xC9 0x00 0xA8 0xC0

Work mode 1

0x01: TCP Client

0x00: UDP

0x02: UDP Server

TCP mode 0x01

baud rate 3 UART baud rate 115200 0x00 0xC2 0x01

Reserved 1 Reserved 00 0x00

checksum 1

Sum(destination IP,

destination port, host IP,

host port, gateway, work

mode, baud rate,

reserved)

0xB9 0xB9

prefix 2 0x55 0xAA 0x55 0xAA 0x55 0xAA



Once in configure mode, the UART parameter change to 9600bps,n,8,1, and a ‘U’ ascii character is send

out to ensure the control MCU that in the configure mode. If the 24byte command has effect, a ‘K’ ascii

character is send back to control MCU. If configure command format error, an ‘E’ character will be send back

to control MCU. If the error is the checksum not match , the 1byte right checksum will be send back to control

MCU also.

6.12 Network Settings Command

Network Settings is fulfilled via UDP Broadcast. No need and must not connect CFG.

UDP settings parameters:

UDP Broadcast Destination Address: 255.255.255.255

UDP Local Port: 1500

UDP Destination Port: 1500

40 bytes packet is broad-casted to the web via UDP when searching for devices. The module with same

WLAN physically respond and return 35 bytes.

Send Settings Command Format:

Name Length Description Example

MAC 6 Set MAC address of module 00 CE 83 25 4D 60

Old Password 6 110415 31 31 30 34 31 35

Configuration

Parameter

21 It is same with serial settings excel,

besides header and check bits.

c9 00 a8 c0 2a 20

07 00 a8 c0 8c 4e

c9 00 a8 c0 01 00

c2 01 03

Independent

ID 3 ID-H,ID-L,ID-type, 0 for not enable 00 00 00

Subnet Mask

4 The low is ahead, as 255.255.255.0 00 FF FF FF

Return Settings Command Format:

Name Length Description Example

MAC 6 Set MAC address of module 00 CE 83 25 4D 60

Status Word 1 Version #, as 4.2 stands for 0x42 42

Configuration

Parameter

21 It is same with serial settings excel,

besides header and check bits.

C9 00 A8 C0 2A 20

07 00 A8 C0 8C 4E

C9 00 A8 C0 01 00

C2 01 03

Independent

ID 3 ID-H,ID-L,ID-type, 0 for not enable 00 00 00

Subnet Mask 4 The low is ahead, as255.255.255.0 00 FF FF FF



6.2 USR-TCP232-SETUP

USR - TCP232 - the Setup software can be extended in functions to specific function module

Settings, as shown in the figure below.

6.21 Setup via COM

In normal working condition, connect CFG pin to enter the serial configuration state, through the network

configuration to be disconnect CFG pin module set through the serial port to receive instruction and to

change the operating parameters.USR-TCP232-Setup software to be modified, as follows:

1.In”use com port for setup”fill in the correct COM number;

2.Click “read via com”,the left side will display the current configuration parameters, can modify the

parameters of the desired Settings;

3. Click “setup via com”,to complete the module configuration;

4. After Setting, disconnect CFG, module begin work.

6.22 Setup via Net

Run USR-TCP232-Setup software then:

1. Click “search in LAN”

2. It reveals modules searched, double click, the left side will display the current configuration

parameters, can modify the parameters of the desired Settings

3. Click “Setup via Net”

4. Module restart automatically



6.23 Special Function Configuration

USR - TCP232 - the Setup software can be extended in functions to specific function module Settings, as

shown in the figure below.



7. Contact us

Company: Jinan USR IOT Technology Limited

Address: Floor 11,Building1,No.1166 Xinluo Street,Gaoxin Distric,Jinan,Shandong,250101 China

Tel: 86-531-55507297, 86-531-88826739

Web: http://www.usriot.com

Support : http://h.usriot.com

Email: [email protected]



Revison history

V3.2.2 Modify description about RS232 and RS485 selection jumper

V3.2.3 Remove Order Info

V3.2.4 Increase USR-TCP232-204

V3.2.5 Address

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